Electrolysis

In this section you will be assessed on your ability to
1.48 understand an electric current as a flow of electrons or ions
1.49 understand why covalent compounds do not conduct electricity
1.50 understand why ionic compounds conduct electricity only when molten or in solution
1.51 describe experiments to distinguish between electrolytes and non-electrolytes
1.52 recall that electrolysis involves the formation of new substances when ionic compounds conduct electricity
1.53 describe experiments for the electrolysis,using inert electrodes,of molten salts such as lead(II) bromide
1.54 describe simple experiments for the electrolysis, using inert electrodes,of aqueous solutions of sodium chloride, copper(II) sulphate and dilute sulphuric acid and predict the products
1.55 write ionic half-equations representing the reactions at the electrodes during electrolysis
1.56 recall that one faraday represents one mole of electrons
1.57 calculate the amounts of the products of the electrolysis of molten salts and aqueous solutions